1.\" $OpenBSD: sab.4,v 1.9 2015/11/21 08:04:20 jmc Exp $ 2.\" 3.\" Copyright (c) 2001 Jason L. Wright (jason@thought.net) 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18.\" DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 19.\" INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20.\" (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21.\" SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 24.\" ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25.\" POSSIBILITY OF SUCH DAMAGE. 26.\" 27.Dd $Mdocdate: November 21 2015 $ 28.Dt SAB 4 sparc64 29.Os 30.Sh NAME 31.Nm sab , 32.Nm sabtty 33.Nd Infineon SAB82532 (ESCC2) serial communications driver 34.Sh SYNOPSIS 35.Cd "sab* at ebus?" 36.Cd "sabtty* at sab?" 37.Sh DESCRIPTION 38The 39.Nm 40is an 41.Tn Infineon 42(formerly 43.Tn Siemens ) 44SAB82532 (ESCC2) serial interface chip used in PCI-based UltraSPARC 45.Tn Sun 46workstations. 47The ESCC2 provides two independent input/output channels per instance. 48These chips are normally used to provide RS-423 and RS232 serial ports 49for general purpose use. 50.Pp 51The 52.Nm 53driver supports all of the standard 54.Xr tty 4 55ioctl calls. 56The status of the DTR, RTS, CTS, and DCD signals can be queried with 57TIOCMGET command, but, due to limitations in the hardware, 58only the DTR and RTS signals can be modified with TIOCMSET, TIOCMBIC, 59and TIOCMBIS 60.Xr ioctl 2 61commands. 62.Sh FILES 63.Bl -tag -width /dev/ttyh[0-1] -compact 64.It /dev/ttyh[0-1] 65Serial ports 66.El 67.Sh SEE ALSO 68.Xr ioctl 2 , 69.Xr ebus 4 , 70.Xr intro 4 , 71.Xr tty 4 72.Sh HISTORY 73The 74.Nm 75driver first appeared in 76.Ox 3.1 . 77.Sh BUGS 78The 79.Nm 80does not support cua minor devices. 81